Water and Sand Inrush During Mining Under Thick Unconsolidated Layers and Thin Bedrock in the Zhaogu No. 1 Coal Mine, China

Xu, Yong; Luo, Yaqi; Li, Jianghua; Li, Kunqi; Cao, Xuchu

doi:10.1007/s10230-018-0539-8

Cited by 41 publications

(17 citation statements)

References 19 publications

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“…shafts under thick loose aquifers will be useful for the prediction and prevention of disasters and accidents caused by nonmining damage in shafts located below thick loose aquifers, and will be of great practical significance to ensure the safety and reliability of mining processes [12][13][14][15][16].…”

Section: Geofluidsmentioning

confidence: 99%

“…The parameters of each index were standardized with reference to the values indicated above. Equations (8), (9), (10), (11) and (12) were then coded using MATLAB software. The original geological parameters collected were substituted, and the indicated values were used to calculate the results.…”

Section: Evaluation Indexes Affecting Shaft Stability Whenmentioning

confidence: 99%

“…Calculated by the Combined Weight Method. Based on the concept and theoretical method of game theory, the results calculated using the subjective weight method and the objective weight method were substituted into Equations (9), (10), (11) and (12), and the weight coefficients α 1 = 0:1828 and α 2 = 0:8172 were determined. Finally, the comprehensive weight value, ω′, was calculated (please see Figure 3 for the results).…”

Section: Evaluation Indexes Affecting Shaft Stability Whenmentioning

confidence: 99%

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Evaluation on the Stability of Vertical Mine Shafts below Thick Loose Strata Based on the Comprehensive Weight Method and a Fuzzy Matter-Element Analysis Model

et al. 2019

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Damage to mine shafts located below thick loose aquifers, caused by coal seam mining, can seriously affect the operational safety of mines. In view of such a problem, the comprehensive weight method and the fuzzy matter-element analysis method were used to analyze and evaluate the stability of mine shafts below thick, loose aquifers. Based on data relating to shaft structure parameters collected from fifteen damaged shafts in coal mines in East China, a comprehensive analysis was performed. The results showed that (1) the two indexes of surface subsidence velocity and water level drop value at the bottom of a loose aquifer have a large influence on the stability of shafts below thick loose aquifers, and (2) the predicted results of thirteen sets of samples were the same as the results measured during actual production; the accuracy of the model was 86.67%. The comprehensive weight method and the fuzzy matter-element analysis model both show good reliability for evaluating the stability of mine shafts below thick loose aquifers and can provide a scientific reference for the analysis of the stability of mine shafts in areas with thick loose strata, as well as for the design of comprehensive control plans that could subsequently be implemented.

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Section: Geofluidsmentioning

confidence: 99%

Section: Evaluation Indexes Affecting Shaft Stability Whenmentioning

confidence: 99%

Section: Evaluation Indexes Affecting Shaft Stability Whenmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation on the Stability of Vertical Mine Shafts below Thick Loose Strata Based on the Comprehensive Weight Method and a Fuzzy Matter-Element Analysis Model

et al. 2019

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“…The method would be useful in mine water inrush assessment and prevention. Liu et al (2017), Zhang et al (2017), and Xu et al (2018a) present case studies on overburden failure, water and sand inrush, and the height of the water-flowing fractured zone. These case studies provide practical experience for dealing with similar problems in other coal mines.…”

Section: Contributions To This Special Issuementioning

confidence: 99%

Mine Water Problems and Solutions in China

2018

Mine Water Environ

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“…If there is a thick loose layer of the mining area, the law of the surface subsidence has some special characteristics (When the loose layer is content of water, the subsidence coefficient is larger.). Through the researches and practices of mining workers over the years, the study on the deformation of general geological conditions of coal mining caused by overlying strata and surface movement has been more fully, and for the laws of surface movement under thick loose layer deformation caused by mining, still lack enough understanding [3].…”

mentioning

confidence: 99%

Analysis on Influence Factors of Mining Subsidence in Backfilling under Thick Loose Layer

Wu¹,

Li²,

Wu³

2017

JRST

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Mining subsidence, mine solid waste emissions caused by the direct cause of ecological environment deterioration in mining area, effective control and reduce the surface subsidence and reasonable control and utilization of mine wastes, and realize green mining is a fundamental way to reduce the damage of the ecological environment in mining area. To solve this problem, using FLAC3D three dimensional numerical simulation method, the above four factors were changed to simulate the surface movement and deformation, and the influence of the above four factors on the maximum surface subsidence was discussed. By using the orthogonal experiment, the importance of the four factors is queued, and the correlation degree ranking of the maximum subsidence value is obtained. The influence degree of the factors on the maximum surface subsidence is: the filling ratio, the thickness of the key stratum, the strength of the filling body and the thickness of the loose layer.In this paper, the content of the "three under" pressure coal mining area of production practice to provide basic data, can improve the recovery rate of coal resources, reduce the cost of filling, the maximum economic benefits. Has important practical significance to protect the ground structure, reduce the ecological damage, and realize the sustainable development of coal mine.

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Water and Sand Inrush During Mining Under Thick Unconsolidated Layers and Thin Bedrock in the Zhaogu No. 1 Coal Mine, China

Cited by 41 publications

References 19 publications

Evaluation on the Stability of Vertical Mine Shafts below Thick Loose Strata Based on the Comprehensive Weight Method and a Fuzzy Matter-Element Analysis Model

Evaluation on the Stability of Vertical Mine Shafts below Thick Loose Strata Based on the Comprehensive Weight Method and a Fuzzy Matter-Element Analysis Model

Mine Water Problems and Solutions in China

Analysis on Influence Factors of Mining Subsidence in Backfilling under Thick Loose Layer

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